Oil shield for belt pulleys



May 1, 1923.

1,453,673 A.. H. HEBERT OIL SHIELD FOR BELT PULLEYS Filed Oct. 1, 1921 ATTORN EY8.

Patented May 1, 1923, i

un te;-

- ALBERT H. nniana'r, or HOLYOK'E, massacnosnrrs.

01L smnnn Eon BELT PULLEYS.

Application filed October 1, 1921 Serial No. 504,622.

and useful Improvements in Oil Shields for.

Belt Pulleys, of which the following is a specification. i

The present invention relates to means for preventing a'liquid, such'as oil, from travelling alonga rotating shaft beyond a certain point More particularly the invention relatesto adevicein the nature of a shield which is adaptedfor attachment .to the crank shaft of "aFord car or other-automobile, between thelengine casing and the fan-belt pulleyfito protect the latter from theoil which: invariahlv works out of the engine casing. and travelsalong the crankshaft. T

One object of the invention is to provide a device of the character described which shall be of simple and inexpensive construction and which will perform its function efiiciently. and reliably.

v Another object of the invention is to provide means which will not only arrest the flow of oil or other liquid along a rotating I 'tions 10 and 11 which are pivoted'fl together shaft, but will cause the oil to be removed from the shaft so as to avoid the unde's1rable accumulation of oil upon the shaft and "the attendant possibility that more or less of the accumulated oil will ultimately penetrate beyond the arresting means.

A further object of the invention is: to provide a device of the character described which may be'readily and conveniently attached to a shaft or detached therefrom withoutthe necessity of passing itover the end of the shaft or interfering with parts ,mounted upon the shaft.

Other objects of the invention and the fea tures of construction by which they are attained will appear from the following description of the preferred embodiment thereof illustrated in the accompanying drawings inwhichk f .Fig. 1. isa view, in side elevation, of ,a shield. constructed inaccordance with the present invention, r i

Fig. .2 is a fragmentary view of the 0ppositersideof theshield from that shown inFig.1;-

;-Fig. 3 is anedge view of theshield;

. is aside elevationalview -of the a hit-Meter ng the-semen? the e enedup and ready to be attached to a; shaft,

Figs. 5, 6 and 7 are detail sectional views:

taken respectively on the" lines 5- 5, 6+6, and 77of.-Fig. 1 i i 7 Referring to the drawings, the illustrated oil shield comprises a' disk-like device 3..

which is adapted, by reason of'a central aperture therein,-to encircle the crankshaft,

of an automobile engine,- between'the' en gine casing and the fan-belt pulley and an annular member or washer 9' of absorbent material, such as felt which is carried the portion 8 ofthe shield and is also adapted to encircle the crank-shaft.

p The above mentioned parts are further so constructed and arranged that when applied'to the shaft,

the inner peripheral face ofnthe absorbent washer will be in intimate contact withfthe shaft and the whole device w-illbe'rigidly, seclilred to the shaft so as to rotate there-1 wit l For convenience in applying the shield, it is made in two partsso that it may be-read ily applied directly to a portionof a shaft 1ntermed1ate1ts ends, thus avoiding the nocessity. of disturbing partsalrea'clymounted upon the shaft. portion 8 of the shield is formed in two secat 12, and the absorbent washer 9 is split transversely at two points tov providetwo separated segments one of which is secured to the disk section 10 while the other section of said washer is secured to the disk. section 11.

As shown, the disk like The disk sections 10 and 11 are'duplicates,

except as hereinafter set forth, and each has;

a surface area greater than half the-surface area of thedlsk when said sections are as-- sembled, thus enabling the disk sectons to overlap one another atdiametrioallyopposite-sides of the central aperture therein, as

shown in Fig. 1'. The overlapped ends of the disk sections 10 and 11, atone side of the central aperture therein receiveI the the disk sections are provided. with interen gaging fastening. (lt =.vic eshereinafter to be;

described. I v The 'twosegments .of the absorbent member or washer 9 are severallysecuredto the disk sections 10 and 11*by aretaihing ring 14: which isl also split transversely at two"- p s e a ea d'tie s asne corresponding to the segments of the absorbent washer which is held thereby.

As shown clearly in Fig. 3, the absorbent washer is frictionally held between the re 5 taining ring 14 and one side of the disklike portion 8 of the shield. To secure the retaining ring 14 to the portion 8 of the shield, the segments of the retaining ring are provided with fastening prongs 15 which 19 project from the outer periphery of said segments, these prongs project substantially at right angles to the planes of the washer segments and extend through apertures 16 in the disk sections, which are provided. to re- 15 ceive them. The apertures 16 are arranged in a circle concentric with the peripheral edge of the disk and the free ends of the prongs 16 project beyond the disk at the opposite side from the absorbent washer and 20 are bent over against the face of the disk and toward the inner periphery thereof. It will be noted that while one segment of the absorbent washer 9 and the corresponding segment of the retaining ring 14 is coextensive in length with the length of the inner peripheral edge of the corresponding disk section, the other washer and retaining ring segments are shorter than the correspondii'ig disk section, and are arranged to leave both ends of the associated disk section uncovered for a short distance. This construction permits the desired overlapping of the disk sections 10 and 11 to be effected without correspondingly overlapping the adjacent ends of the washer and retaining ring segments.

As shown in Fig. 1, the construction and ar- .,rangement is such that when tiie shield has been applied to the crank shaft and the disk sections have been closed into operative posi- 40 tioin the adjacent ends of the washer and retaining ring sections are disposed in abu relation.

To fasten together the unpivoted ends of thed isk sections 10 and 1]. when the shield has .been appl.ied to a shaft, interengaging fastening devices are provided comprising, .,in' the lillustrated embodiment of the inven e aa wagae 18 on the disk section 10 and anaperture ltl n the disk section 11 for receii ljn g sai'c l' 'tong11e. The fastening tongue lgm av conveniently be struck up from the .,,disk jse tition l Q 'so as to extend at right angles to the face o f said section on the side theret oheioverlapped by the disk sectioirll'. i i s 'sho'wn the fastening tongue 18 is'i adially. dis qbs'edwith respect to the center .offthe' tliski a nd the: aperture 19 is radially elongated Ito receiveland cooperate with the tongue 18". 'l vhenthe 'unpivoted ends of the disk sections 10 .and llhav e been overlapped itst ih ii 'lder f a and 19 ,beien intereng aged, ,disik sections are secures e ciency to. spread apart iri' their own pl andieachdisk section is obvibiisly litl'd tilt-"other disk section against lateral displacement in one direction. To prevent lateral displacement of said disk sections in the opposite direct-ion, such as would tend to disengage the fastening devices 18 and 19, one of the disk sections (in the form illustrated, the section 11) is provided with a laterally offset lug 20, said lug being arranged to overlap the disk section 10 upon the opposite side thereof from that overlapped by the disk section 11. As the disk sections are closed together around the crank-shaft and the unpivoted ends of said sections overlap one another, the end of the disk section 10 is forced between the offset lug 20 and the non-offset portions at the corresponding end of the disk section 11, and the outer marginal portions at the overlapping ends of the disk sections will be constrained to spring slightly away from each other to permit the tongue 18 to ride across the face of the disk section 11. l/vhen the disk sections have been closed to tightly clamp the washer to the shaft, the resiliency of the flexed overlapping portions of the disk sections will cause the tongue 18 to spring into the aperture 19, thus locking the disk sections so as to prevent them from being opened up by an outward swinging movement about the pivot stud 12. When the fastening devices 18 and 19 have been inter-.

engaged, the offset lug 20 functions topre vent lateral displacement of either of the overlapping ends of the disk sections in a direction to disengage the fastening devices. To assist in applying the shield to a shaft, peripheral notches 21 may be out in each of said sections, said notches providing shoulders arranged for engagement by the jaws of pliers or other suitable tool for 010s ing the disk sections around the shaft.

It will be seen that when the pivoted sections of the shield are opened or spread apart, as shown in Fig. 3, the shield may be readily slipped over the side of the shaft to which it is to be applied. Then said sections are closed and the fastening devices 18 and 19 are interengaged, the shield appears as shown in Fig. 1 and is rigidly secured to the crankshaft so as to rotate therewith. The inner peripheral edge of the absorbent washer 9 is then held in intimate contact with the shaft and completely encircles the same.

The shield is secured in place upon the crank-shaft with the side bearing the ab sorbent washer facing the engine casing so that oil travelling along the shaft from the engine will be absorbed by said washer before reaching the opposite side of the shield which faces the fan belt pulley. Since the shield rotates with. the shaft, centrifugal force will tend to draw the oil toward the outer peripheral surface of the washer. In accordance with an important feature of the present invention provision "-is' made for beexposedexceptat thespacedpoints where .both sides of the washer.

causing the oil heldin the absorbent washer all the oil which may reach from theshaft and thus effectively preventing any of the oil from reachingthefan belt pulley.

lViththe above end. in view, the fastening )rongs 15 are s )aced apart so that when the ring 14 .is securedin place the outer peg ripheral edge of the absorbent washer will the, prongs 15 extend thereacross. Thus, as shown in, Fig. apertures 22 Jare formed, whic halternate with the prongs 15 and through which the oil .willbe dissipatedin minute 'particlesby centrifugal force. The

washer is, in effect, enclosed in. an annular housing having a series of apertures in its;

outer peripheral wall to permit the periph-' eral escape of oil but completely enclosing constitutes one side of the. washer housing extends beyond the outer periphery of the washer and serves as a shield to protect the fan belt pulley from the flying particles of oil if any should be deflected in that direction. v

In practical use it has been demonstrated that the above described oil shield effectually operates to prevent any oil which may travel along a shaft to which the shield is applied, from passing beyond the shield. lVhen applied to the crank-shaft of an automobile the shield perfectly performs the function of protecting the fan belt'pulley from all oil from said shaft. Furthermore the device is of simple and inexpensive construction and is so designed that it may readily be attached to a shaft or detached therefrom without the necessity of disturbing other parts mounted upon the shaft.

lVhile for illustrative purposes the inven tion has been herein disclosedin what is prising an absorbent washer. a disk. a separate retaining ring, the disk being of greater dlameter than the washer'and the washer being interposed between the disk, andft-hering and means on the ring for securing the ring and washer to the disk, the device as a whole being adapted to be fixedly -secured upon a shaft with the inner peripheral face of the washer in contact with theshaft, and

with the inner peripheral faces of the ring and disk spaced from the shaft.

2. A device of the character described The disk which i comprising a centrally apertured' composed oftwo sections adapted to overlap at substantially, diametrically .opposite points and piv'otally connected one side of said aperture. an absorbent washer made in two substantially semi-circular segments severally carried by the sections of said. disk, the

parts being sov constructed and arranged that when. the disc. sections are opened the device may..be.s1ipped over. the sideof ashaft and 3 when said disk 'sections are clo'sed'the.

washer will encircle. the shaft with its ;inner periphery in contact" therewith, and I means for securing the disk sections in closed I ,1 -"3Q 3. A device of azthe .characterIdescribed I relation. 1.

comprising an apertured .d.isk-, .'c omposed I of; 'twosections pivoted together and adapted tobe swung apart to open up said apertures, an absorbent washer made intwo'segments divided along transverse planes, said seggp- C vments being severally mounted upon the disk sections and having their inner, peripheral.

faces adapted to engage the-shaft when the p I disk sections are swung toward each 'other',;-, and lnterengaging fastening. devices on said disk sectionsfor securing said sections in closed relation and binding the washersegments against the shaft sothat the whole device will rotate with the shaft;

4. A device ofY the-character described comprising an apertured disk 'c'omposedof two sections pivoted together and adapted to be swung apart to permit-the disk to be fitted over a sha-fti an absorbent washer made in two segments divided I along transverse shaft when'the disk sections are swung"t planes, said segments being severally mount- I II I ed upon the disk sections and having their inner peripheral faces adapted to engage the I sections in closed relation with the washer I or the like for the purpose of securingthe device to the shaft. I 1 5. A device [of the character "described comprising a centrally aperturedjdisk composed-of two sections adapted to overlap at substantially diametrically opposite points i and pivotally' connectedat one side of said aperture. an absorbent washer made in two,

substantially semi-circular segments severally carried by the sections of said disk, the parts being so constructed. and arrangedthat when the unpivoted ends of the disk sections are'swun'g apart the device may be slipped over the side ofashaft and when said ends brought together the washer will encirclef,

the shaft withits inner periphery in contact therewith, a laterally, offset member on the [unpivoted' end of one of said disk sections arranged to engage within an openingxin the ward each other, means for securing the disk corresponding end of the other disk section and means offset from one of said ends of the disk sections for overlapping the outer sur face of a portion of the corresponding end of the other disk section to prevent lateral displacement of said sections tending to disengage the fastening devices.

(5. A device of the character described comprising an absorbent washer adapted to fit closely upon a shaft as to rotate therewith a disk apertured to receive said shaft and having said Washer secured to one side thereof, means for securing the Washer to the disk consisting of a ring between which andthe disk the Washer is interposed said ring being adapted to encircle the shaft, and a plurality of prongs projecting laterally comprising an absorbent Washer adapted to encircle a shaft, and means for partially enclosing the Washer and securing it in fixed relation to the shaft with its inner periph-' eral edge in contact with the shaft, said means being constructed, and arranged to expose the onter peripheral edge of the washer to permit the escape of 'oil from the Washer.

In testimony whereof I have afiixed my signature.

ALBERT H. HEBERT. 

